# -----------------------------------------------------------------------------
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#
# Portions Copyright 2007-2015, Anthony Tuininga. All rights reserved.
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# -----------------------------------------------------------------------------
# implicit_results.py
#
# Demonstrates the use of the Oracle Database 12.1 feature that allows PL/SQL
# procedures to return result sets implicitly, without having to explicitly
# define them.
# -----------------------------------------------------------------------------

import oracledb
import sample_env

# determine whether to use python-oracledb thin mode or thick mode
if sample_env.run_in_thick_mode():
    oracledb.init_oracle_client(lib_dir=sample_env.get_oracle_client())

connection = oracledb.connect(
    user=sample_env.get_main_user(),
    password=sample_env.get_main_password(),
    dsn=sample_env.get_connect_string(),
    params=sample_env.get_connect_params(),
)

with connection.cursor() as cursor:
    # A PL/SQL block that returns two cursors
    cursor.execute(
        """
        declare
            c1 sys_refcursor;
            c2 sys_refcursor;
        begin

            open c1 for
                select * from TestNumbers;

            dbms_sql.return_result(c1);

            open c2 for
                select * from TestStrings;

            dbms_sql.return_result(c2);

        end;
        """
    )

    # display results
    for ix, result_set in enumerate(cursor.getimplicitresults()):
        print("Result Set #" + str(ix + 1))
        for row in result_set:
            print(row)
        print()
